521c84aa89
Kubeadm supports only one minor release back, thus for 1.9 it requires minimum kubelet from 1.8. Fixes: kubernetes/kubeadm#430
79 lines
2.2 KiB
Go
79 lines
2.2 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package preflight
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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)
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func TestGetKubeletVersion(t *testing.T) {
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type T struct {
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output string
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expected string
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valid bool
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}
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cases := []T{
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{"v1.7.0", "1.7.0", true},
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{"v1.8.0-alpha.2.1231+afabd012389d53a", "1.8.0-alpha.2.1231+afabd012389d53a", true},
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{"something-invalid", "", false},
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}
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dir, err := ioutil.TempDir("", "test-kubelet-version")
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if err != nil {
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t.Errorf("Failed to create directory for testing GetKubeletVersion: %v", err)
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}
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defer os.RemoveAll(dir)
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// We don't want to call real kubelet or something else in $PATH
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oldPATH := os.Getenv("PATH")
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defer os.Setenv("PATH", oldPATH)
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os.Setenv("PATH", dir)
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// First test case, kubelet not present, should be getting error
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ver, err := GetKubeletVersion()
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if err == nil {
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t.Errorf("failed GetKubeletVersion: expected failure when kubelet not in PATH. Result: %v", ver)
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}
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kubeletFn := filepath.Join(dir, "kubelet")
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for _, tc := range cases {
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content := []byte(fmt.Sprintf("#!/bin/sh\necho 'Kubernetes %s'", tc.output))
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if err := ioutil.WriteFile(kubeletFn, content, 0755); err != nil {
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t.Errorf("Error creating test stub file %s: %v", kubeletFn, err)
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}
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ver, err := GetKubeletVersion()
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switch {
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case err != nil && tc.valid:
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t.Errorf("GetKubeletVersion: unexpected error for %q. Error: %v", tc.output, err)
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case err == nil && !tc.valid:
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t.Errorf("GetKubeletVersion: error expected for key %q, but result is %q", tc.output, ver)
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case ver != nil && ver.String() != tc.expected:
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t.Errorf("GetKubeletVersion: unexpected version result for key %q. Expected: %q Actual: %q", tc.output, tc.expected, ver)
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}
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}
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}
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